Effects of Cholinergic and Opioid Antagonists on In Vitro Release of Met-Enkephalin, Somatostatin and Insulin-like Growth Factor-1 by and PENK Expression in Crop, Proventriculus and Duodenum of Newly Hatched Chickens [PDF]
AnimalsThe gastrointestinal (GI) tract is under neural, endocrine and paracrine control. The release (basal and in the presence of either cholinergic and opioid antagonists) of Met-enkephalin, insulin-like growth factor 1 (IGF-1) and somatostatin (SRIF) was ...
Colin G. Scanes +3 more
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Disparate Effects of Stressors on Met-Enkephalin System Parameters and on Plasma Concentrations of Corticosterone in Young Female Chickens [PDF]
AnimalsThe effects of stressors were examined on Met-enkephalin-related parameters and plasma concentrations of corticosterone in 14-week-old female chickens.
Colin Guy Scanes +1 more
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Research note: Peripheral administration of Met-enkephalin: Novel attenuation of the adrenal medullary and thyroidal stress responses in young female chickens [PDF]
Poultry ScienceAdrenal hormones play a critical response to stresses in poultry, livestock and other vertebrates. Moreover, there are stress effects on thyroid hormones. Plasma concentrations of epinephrine (EP), norepinephrine (NE), thyroxine (T4) and triiodothyronine
Colin G. Scanes +1 more
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Highly sensitive in vivo detection of dynamic changes in enkephalins following acute stress in mice [PDF]
eLifeEnkephalins are opioid peptides that modulate analgesia, reward, and stress. In vivo detection of enkephalins remains difficult due to transient and low endogenous concentrations and inherent sequence similarity.
Marwa O Mikati +8 more
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Research Note: Morphine influences circulating and tissue concentrations of met-enkephalin and proenkephalin (PENK) expression and plasma concentrations of corticosterone in chickens [PDF]
Poultry Science: The effects of the administration of the opioid agonist, morphine, on plasma and tissue concentrations of Met-enkephalin were determined in 14 wk old female chickens.
Colin G. Scanes +1 more
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Co‐Expression of Tardive Dyskinesia and Drug‐Induced Parkinsonism in Rats Chronically Treated With Haloperidol [PDF]
Neuropsychopharmacology ReportsAim We aimed to create a rat model of drug‐induced parkinsonism and tardive dyskinesia by chronic administration of haloperidol and examine the expression of direct and indirect pathway markers in the striatum of the model rats.
Iku Kinoshita +7 more
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Effects of Restraint Stress on Circulating Corticosterone and Met Enkephalin in Chickens: Induction of Shifts in Insulin Secretion and Carbohydrate Metabolism [PDF]
AnimalsThis study examined the effects of acute restraint stress in the presence or absence of naltrexone on the circulating concentrations of insulin, glucose, Met-enkephalin and corticosterone in 14-week-old chickens [design: 2 sex × 2 stress/non-stress × 2 +/
Colin G. Scanes +2 more
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Central δ/κ opioid receptor signaling pathways mediate chronic and/or acute suckling-induced LH suppression in rats during late lactation [PDF]
The Journal of Reproduction and DevelopmentIn mammals, secretion of tonic (pulsatile) gonadotropin-releasing hormone (GnRH)/luteinizing hormone (LH) is often suppressed during lactation. Suppression of GnRH/LH pulses in lactating dams is assumed to be caused by suckling stimuli and a chronic ...
Yoshihisa UENOYAMA +6 more
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Role of enkephalin derivative in promoting wound healing and scar remodeling via increased epidermal growth factor in a mouse model [PDF]
Archives of Aesthetic Plastic Surgery, 2023 Background Enkephalin, an endogenous neuropeptide, binds to the delta (δ) opioid receptor and exerts an antinociceptive effect. Recent studies have suggested that neuropeptides might effectuate cutaneous wound healing.
Sun Eung Kim +2 more
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The role of enkephalinergic systems in substance use disorders
Frontiers in Systems Neuroscience, 2022 Enkephalin, an endogenous opioid peptide, is highly expressed in the reward pathway and may modulate neurotransmission to regulate reward-related behaviors, such as drug-taking and drug-seeking behaviors.
Lauren G. Rysztak +2 more
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